Metis theme is now running on bootstrap5

The ways how to customize admin area (That ones I found)

The site was updated to 2.3.1 stable version

New one page theme for e107 core 2.3.1 only

Responsive version of jayya theme

Some new information

Using WP for areas when e107 fails and e107 for adminstration custom things

Snow White theme is theme inspired efiction theme with bootstrap5 support

Somerbrise theme is theme inspired efiction theme with bootstrap5 support